在电路中,并联的各个元件的()都相同。
A.电压
B.电阻
C.电流
D.电容
参考答案:A
受拉钢筋末端应作180°弯钩的钢筋是()。
A.HPB300
B.HRB335
C.HRB400E
D.HRBF500E
I tried to call you _____ I hear from him, but you were not in.[ ]
A. since
B. while
C. until
D. as soon as